Metallic packing for piston-rods.



Nu. 694,764. I PatentedMgr. 4,1902.

LUNGSTRETH &G. VLB. KING. METALLIC PACKING FUR PISTGN RODS.

- (Application med sepa. 17. 1900.) (No Model.) 2 Sheets-Sheet l.

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No. 694,764. Patented Mar. 4, i902.,

. c. 'Lou-GSTRETH & c. w. (11.( Kms.

METALLIC PACKING FDB'PIS'TON RODS.

v (Application med sept. 1v. 1900.) mo nodal.) 2 sheets-snm 2;

TH: 'domus Pzrsws co.. maraurm., wsnmm'om nA c4 l UNITED STATES lPATENT QEEICE.

CHARLES LoNcsTRETH, orv YEADCN, AND CHARLES w. c. KINQCE PHILA- DELPHIA, PENNSYLVANIA, AssICNoEs To TEE UNITED sTATEsJMETAL- LIC PACKINGr COMPANY, onk PHILADELPHIA, PENNSYLVANIA, A CoEPo- RATIONv OF PENNSYLVANIA. f

'M ETALLIC PACKING Foa PlsToN-Rons.

SPECIFICATION forming part of Letters lllatent` No. 694,764, dated Marh 4, '1902 Application and september 17, `1.900. seal No. 80,261. un maui dac., Without unduly increasing the diameterV of said casing, an object which we attain in the manner hereinafter set forth, reference being had to the accompanying drawings, in which- Figure 1 is a longitudinal section of partvof a Cylinder, piston-rod, stuffing-box, and rod-y zo packing constructed in accordance with our invention; and Fig. 2 is a perspective view of the parts of one of the sectional packing-ring casings detached from each other.

In Fig. 1 part of the stuffing-box casing of an engine-cylinder is represented at 1, part of the piston-rod at 2, and the stufting-box cap or follower at 3, all of which parts may be similar to those of ordinary engines, except that the cap or follower 3 has a seat for a ball- 3o joint ringft and a recess for the reception of a ange of the sleeve 5, which enters the outer end of the stufling-box casing and is confined thereto by said cap or follower. In the present instance the rod is provided with two sets of packing-rings, each set of rings being contained in a sectional casing comprising seg' ments 6, recessed for the reception of the packing-rings 7, the casing being constructed in sectional form in order that it maybe fitted 4o to the rod, which in many cases has at its outer end shoulders or projections of such diameter as would preclude the slipping of an annular casing of the required diameter longitudinally onto the rod. f 45 In order to secure together the segments of the packing-ring casing, we form in the opposite faces of said segments beveled grooves 8 for the reception of beveled 'ribs 9 upon segments 10, which are secured to the segments 6 by screws or other equivalent fastenings 11, 5o the joints between the segments 10 being at right angles to those between the segments-6, whereby the two sets of vsegments mutually retain each other in position, a, clamping or wedging effect being due to the action of the beveled inner faces of the ribs 9 upon the correspondingly-beveled inner vfaces of the grooves 8, the outer faces of said ribs and groovesbeing preferably free from contact with each other, as shown in Fig. 1. The segments 6 are thus held together Without the aid of any encircling ring, "although, if desired, such an encircling ringrnay be used as an additional protection and in some cases the securing-segments l0 may be used only 65 at one end of the packing-ring casing instead of at both ends of the same.

Pressure is exerted upon the outer packing-rings 7 by means of a follower 12, uponv which bears a ring 13, acted upon by springs 7o 14, contained in sockets in said ring and bearing against a ring 15, which is seated against an internally-projecting liange 16 of the sleeve 5, all of the rings 12, 13, and 15 being composed of sections to permit of their being readily fitted to the rod. The inner end of the sleeve 5 has a seat for the ball-joint ring 17 of the inner packing-ring structure which is precisely similar to the outer packing-ring structure with the exception that the follower 121L is elongated and has a flanged inner end sockeied for the reception of springs 1S, which bear against the shoulder at the inner end of ,the stuffing-box casing.

Having thus described' our invention, we 85 claim and desire to secure by Letters Patent- 1. The combination in a metallic-rod pack? ing, of a packing-ring casing composed of segments, with retaining-segments secured 9o at each end thereof to the face of said segments of the casing and disposed so as to break joints with said casing-segments, substantially as specified.

2. The combination in a metallic-rod packing, of a packing-ring casing composed of segments, with retaining-segments secured at each end thereof totheV face of said segments of the easing and having ribs adapted to grooves therein, said retaining-segments being disposed so as to break joints Wit-h the casing-segments, substantially as specified.

3. The combination in a metallic-rod packing, of a packing-ring casing composed of segments, with retaining-segments secured at each end thereofto the face of said segments of the casing and having beveled ribs engaging with correspondingly-bevoled grooves in Lthe casing-segments, said retaining-segments being disposed so as to break joints with the casing-segments, substantially as specified.

4. The combination in a metallic-rod packing, of inner and outer sets of packing-rings each having a spring-pressed follower, with an interposed sleeve having a ange upon which is seated a ring constituting a bearing for the springs which act upon the follower of the outer set of packing-rings, substantially as specified.

5. The combination in metallic-rod pack-l ing, of inner and outer sets of packing-rings each having a spring-pressed follower, with the interposed sleeve having a seat for a balllbearing ring forming part ofthe inner pack- 

